3.x.x release notes

Changed Cassandra driver package from com.datastax.driver.core.Session to com.datastax.oss.driver.api.core.CqlSession

Bumped spring-cloud-dependencies to Hoxton.SR4 to align with Spring Boot

Updated Spring Boot Admin to 2.3.0 to align with Spring Boot

Updated GraphQL Spring Boot starter and GraphQL Java to latest versions

Added new package names for GraphQL to across-configuration.yml

Changed Hateos deprecated classes, see https://docs.spring.io/spring-hateoas/docs/current/reference/html/#migrate-to-1.0

Updated tests to use testcontainers

Moved all tests to JUnit5